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Humanity has been living on this planet for thousands of years, alongside countless other creatures. It seems like a long time. Like this planet has always been this way. But before us, there were millions of years, when others ruled this world: the dinosaurs. Their species was around for much, much longer than we are at this point. But then, 65 million years ago, the non-avian dinosaurs were extinct. An asteroid impact wiped out this majorly successful species.  It can happen again. Earth is mostly in a quiet neighborhood, but here and there, big impactors will strike. It's not a question of "if". It's "when". Even much smaller bodies than the one that killed the dinosaurs, can be devastating for our civilization, at least locally. So what can we do?  In contrast to the dinosaurs, we have an advantage: we actually do science. We do observational and theoretical astronomy. We have the tools, to become Earth's Defenders, if need be. How do we do it? How good are our chances? And what is the plan, if things get serious? Do we simply "Armageddon" this problem or are there better ways? Links: https://youtu.be/5b3n-u_0QAI Planetary Defenders and 2024 YR4 (20 minutes)    https://youtu.be/jOb2DQWvDvc Planetary Defenders Documentary (1 hour 15 minutes)    https://en.wikipedia.org/wiki/Torino_scale   Host: Paul Salazar Music: royalty-free from incompetech.com

Astronomy can only be enjoyed and practiced at night? It's a common misconception! Actually, there is plenty to do and see in a daytime sky, you just have to know where to look and how to be safe. Please, always take good care of your eyesight and never look directly into the sun, especially not with binoculars or a telescope.   Paul shows you around the astronomer's daytime sky, what to discover, what to experience and how to enjoy the stars, space and everything in between pretty much 24/7! Host: Paul Salazar Music: royalty-free from incompetech.com

Wieso fehlt der häufigste Planetentyp der Milchstraße ausgerechnet bei uns im Sonnensystem? Wo sind die Supererden der Sonne? Vielleicht liegt die Antwort auf diese Frage nicht in der Geburt unseres Sternensystems, sondern in einem viel späteren Moment. Als die Sonne ihre Kinder fraß. Ein Forschungsteam aus Izmir hat nun einen Vorschlag vorgebracht, der nicht nur die kühne These einer planetenfressenden Sonne vorbringt, sondern diese auch noch überzeugend untermauert. Und zwar kann ihr Modell nicht nur erklären, wo die Supererden der Sonne hinverschwunden sind, sondern weshalb unser Heimatstern in mancher Hinsicht eigentlich ganz anders ist, als er sein sollte. Hat die Sonne also ihre Kinder gefressen? Link zum erwähnten Astrobites Artikel: https://astrobites.org/2021/09/02/the-last-message-of-devoured-planets/ Link zur "Ein großer Schritt für die Menschheit" Folge: https://open.spotify.com/episode/0QTindRmN3R5lyADPNANH1?si=7juixD0mSi6i3ajpDppdlQ   Host: Jana Steuer Musik: lizenzfrei bezogen von incompetech.com